Searched for: author:"Khakzad, N."
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Abrishami, S. (author), Khakzad, N. (author), Hosseini, Seyed Mahmoud (author), van Gelder, P.H.A.J.M. (author)
Success Likelihood Index Model (SLIM) is one of the widely-used deterministic techniques in human reliability assessment especially when data is insufficient. However, this method suffers from epistemic uncertainty as it extremely relies on expert judgment for determining the model parameters such as the rates and weights of the performance...
journal article 2020
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Khakzad, N. (author)
Global warming and the subsequent increase in the frequency and severity of wildfires demand for specialized risk assessment and management methodologies to cope with the ever-increasing risk of wildfires in wildland-industrial interfaces (WIIs). Wildfires can jeopardize the safety and integrity of industrial plants, and trigger secondary...
journal article 2019
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Khakzad, N. (author)
System safety and reliability assessment relies on historical data and experts opinion for estimating the required failure probabilities. When data comes from different sources, be it different databases or subject domain experts, the estimation of accurate probabilities would be very challenging, if not impossible, and subject to high epistemic...
journal article 2019
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Eslami Baladeh, Aliakbar (author), Cheraghi, Morteza (author), Khakzad, N. (author)
Optimal selection of safety measures (SMs) is a challenging task for safety managers due to its importance, complexity, and incapability of traditional approaches in considering all the aspects of SMs optimal selection. Sophisticated mathematical models can be used to overcome the limitations of traditional approaches. However, setting the...
journal article 2019
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Swuste, P.H.J.J. (author), van Nunen, K. (author), Reniers, G.L.L.M.E. (author), Khakzad, N. (author)
Major accidents in Western countries, receiving a lot of media attention in the 1970s, are starting point for research into internal and external domino effects in the chemical and petrochemical sectors and clusters. Initially, these reports are published by government institutions and government-related research centres. With the upcoming...
review 2019
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Smith, Roland (author), van de Loo, Jasper (author), van den Boomen, M. (author), Khakzad, N. (author), Jan van Heck, Geert (author), Wolfert, A.R.M. (author)
Water treatment plants (WTPs) are characterised as complex configurations of repairable and deteriorating components. Previous studies have mainly focused on the average or steady-state availability of such systems while ignoring inherent characteristics like degradation. The current research proposes a two-level hierarchical model for long-term...
journal article 2019
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Cheraghi, Morteza (author), Eslami Baladeh, Aliakbar (author), Khakzad, N. (author)
Hazard and Operability analysis (HAZOP) is a popular technique for hazard identification and risk ranking in hazardous facilities. Conventional HAZOP, however, has some drawbacks: (i) it considers a limited number of risk factors, i.e., only the frequency and the severity of hazards; (ii) it assumes equal weights for the risk factors, thus...
journal article 2019
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Chockalingam, S. (author), Pieters, W. (author), Teixeira, Andre M. H. (author), Khakzad, N. (author), van Gelder, P.H.A.J.M. (author)
Because of modern societies' dependence on industrial control systems, adequate response to system failures is essential. In order to take appropriate measures, it is crucial for operators to be able to distinguish between intentional attacks and accidental technical failures. However, adequate decision support for this matter is lacking. In...
conference paper 2019
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Cincotta, Salvatore (author), Khakzad, N. (author), Cozzani, Valerio (author), Reniers, G.L.L.M.E. (author)
Domino effects triggered by fire can cause extremely severe damages to the chemical and process plants. In the need of a more effective prevention of fire domino effects, the present study focuses on firefighting which has received less attention compared to passive and active fire protection systems. Considering both the vulnerability and...
journal article 2019
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Chen, C. (author), Reniers, G.L.L.M.E. (author), Khakzad, N. (author)
Past accident surveys reveal that loading and unloading operations (LUOs) are responsible for 11% of fire-related domino accidents. This study investigates the domino accidents during LUOs in the last two decades and identifies the main causes and features of these domino effects. An index-based approach is proposed to assess these domino...
journal article 2019
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Baladeh, Aliakbar Eslami (author), Khakzad, N. (author)
Complex networks play a vital role in reliability analysis of real-world applications, demanding for precise and accurate analysis methods for optimal allocations of cost and reliability. Since the configuration of a system may change with every feasible solution of cost allocation optimization equation, finding the best arrangement of the...
conference paper 2019
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Khakzad, N. (author)
Exponential growth of oil and gas facilities in wildlands from one side and an anticipated increase of global warming from the other have exposed such facilities to an ever-increasing risk of wildfires. Extensive oil sands operations<br/>in Canadian wildlands, especially in the province of Alberta, along with the recent massive wildfires in the...
journal article 2018
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Khakzad, N. (author)
Effective firefighting of major fires in fuel storage plants can effectively prevent or delay fire spread (domino effect) and eventually extinguish the fire. If the number of firefighting crew and equipment is sufficient, firefighting will include the suppression of all the burning units and cooling of all the exposed units. However, when...
journal article 2018
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Khakzad, N. (author)
The performance of fire protection measures plays a key role in the prevention and mitigation of fire escalation (fire domino effect) in process plants. In addition to passive and active safety measures, the intervention of firefighting teams can have a great impact on fire propagation. In the present study, we have demonstrated an application...
journal article 2018
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Naderpour, Mohsen (author), Khakzad, N. (author)
On February 2007, a massive fire in a propane de-asphalting unit in an oil refinery in Texas, USA happened due to liquid propane release from a cracked pipe in a control station injuring four people, damaging extensive equipment, causing significant business interruption, and resulting in more than $50 million losses. The accident was...
journal article 2018
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Khakzad, N. (author), van Gelder, P.H.A.J.M. (author)
Natech is a technological accident which is triggered by a natural disaster. Increasing frequency of natural disasters along with an increasing growth of industrial plants are bound to increase the risk of Natechs in the future. Due to a lack of accurate field observations and empirical data, risk assessment of Natechs has largely been...
conference paper 2018
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Hosseinnia Davatgar, B. (author), Khakzad, N. (author), Reniers, G.L.L.M.E. (author)
Chemical industrial areas may constitute potential targets for deliberate actions by terrorists. Terrorists having sufficient knowledge of chemical process operations or plant layout may take advantage of improvised explosive devices (IEDs) to cause major events such as fire, explosion and toxic gas dispersion with cross-border consequences...
journal article 2018
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Misuri, Alessio (author), Khakzad, N. (author), Reniers, G.L.L.M.E. (author), Cozzani, Valerio (author)
Before the tragedy of 9/11, the perception of risk in process plants was mainly focused on accidental events caused by technical failures, human errors or natural events. However, since then, the risk of deliberate actions against process facilities - also known as security risk - has also become a concern. Security risk assessment of...
book chapter 2018
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Zhang, L. (author), Landucci, Gabriele (author), Reniers, G.L.L.M.E. (author), Ovidi, Federica (author), Khakzad, N. (author), Zhou, Jianfeng (author)
The propagation of accidents among process units may cause amplification of accident magnitude, resulting in a domino effect chain. Several catastrophic accidents occurred in the process and chemical industry presented these features. Hence, research efforts have been given to the analysis of the domino effects in order to enhance prevention...
book chapter 2018
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Khakzad, N. (author), Landucci, Gabriele (author), Cozzani, Valerio (author), Reniers, G.L.L.M.E. (author), Pasman, HJ (author)
The propagation of fire-induced domino effects in chemical plants largely depends on the primary fire scenario, on separation distances between the units, and on the presence of fire protection barriers. Passive and active safety barriers are widely employed to prevent or delay the initiation or propagation of domino effects. In the present...
journal article 2018
Searched for: author:"Khakzad, N."
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